diffident (自信のない): He was diffident about speaking in public. (彼は公の場で話すことに自信がありませんでした) - 試験に出る! 英単語検索辞書

diffident (自信のない): He was diffident about speaking in public. (彼は公の場で話すことに自信がありませんでした)

He was diffident about speaking in public.